Functions Final - 34-31124

Front

What is a function?

Back

A function is a relation where each input has only ONE output.

Front

What does it mean for a figure to be reflected across the x-axis?

Back

The y-coordinate of each point is multiplied by -1.

Front

If a figure has coordinates (x, y), what are the new coordinates after reflection across the x-axis?

Back

(x, -y)

Front

What is the slope of a line?

Back

The slope is the ratio of the rise (change in y) to the run (change in x).

Front

Calculate the slope if a car travels 390 miles in 6 hours.

Back

65 miles/hr

Front

Calculate the slope if a car travels 520 miles in 8 hours.

Back

65 miles/hr

Front

Back

Nonlinear

Front

Is the relation {(1,2), (2,3), (1,4)} a function?

Back

No, because the input 1 has two different outputs.

Front

What is the definition of a linear function?

Back

A linear function is a function that graphs to a straight line.

Front

What is the general form of a linear function?

Back

y = mx + b, where m is the slope and b is the y-intercept.